Shafting die



Nov. 2, 1943. A. FlNNlE SHAFTING DIE Filed May'28', 1942 (IttomegPatented Nov. 2, 1943 UNITED s'raras PATENT OFFICE snmma ma AlexanderFlnnie, Youngstown, Ohio Application May 2a, 1942, Serial No. 445,103

1 Claim.

This invention relates to a die and more particularly to a die adaptedto be placed in usable position immediately adjacent the last stands ofa shafting mill, bar rolling mill or the like.

The principal object of the invention is the provision of a die adaptedto be used in combination with a shafting or bar rolling mill, which diewill finish the shaft or bar being rolled so as to form the finishedproduct into a perfect round or any other desired shape.

A further object of the invention is the provision of a die adapted tobe positioned adjacent to the last stands of a rolling mill and sodesigned as to be capable of lateral adjustment with respect thereto.

A further object of the invention is the provision of a die adapted tobe used in connection with the last stands of a rolling mill, the saiddie adapted to be liquid cooled so as to prevent the deterioration ofthe material thereof.

A still further object of the invention is the provision of a dieadapted to be used in connection with a shafting or bar rolling mill tofacilitate the formation of a shaft or bar of relatively strongstructural quality due to the tendency of the die toward compressing ormore closely packing the material structures being shaped thereby.

A still further object of the invention is the provision of a dieadapted to be used in combination with the last stands, of a rollingmill, the said die being adapted to control the shape of objectsprimarily shaped by the said rolling mill.

with the foregoing and other objects in view which will appear as thedescription proceeds. the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed. can be made within thescope of what is claimed without departing from the spirit of theinvention.

The invention is illustrated in the accompanying'drawing, wherein:

Figure l is a side elevation of the last stands of a rolling mill andshows the die, the subject of this invention, in workable positionadjacent thereto.

Figure 2 is an enlarged cross-sectional side elevation of the die, thesubject of this invention.

Figure 3 is an end elevation, on a scale similar to that of Figure 2,illustrating the die, the subject of this invention.

By referring to the drawing and Figure 1 in particular, it will be seenthat the last two stands traveling from left to right of the deviceillustrated in Figure 1, will enter it, there is a die generallyindicated by the numeral II which die is formed of material adapted towithstand the wear and heat it is subjected to in shaping bar or shaftemerging from between the rolls HI and i I. It will be seen that the dieit enables the formation ofa perfect bar or shaft as'irregularities inthe shape of the bar or shaft as rolled, are forcefully smoothed out bythe die ll.

Still referring to Figure l of the drawing, it will be observed that thedie II is positioned adjacent the rolls l0 and H in a manner making itpossible to move it sideways in order to facilitate its use withmultiple cavity rolls which are ordinarily common in the art and whereindifferent sizes of bars or shafts may be rolled by simply utilizingadjacent positioned cavities. The means provided for the sideway orlateral adjustment of the die l3, may obviously be varied as to designand construction. In Figure 1 however, such means is illustrated ascomprising a pair of brackets I4 and A, the bracket ll formed with adownturned end, and the bracket I 4A formed with an upturned end. Thesebrackets I4 and A are adapted to slidably engage a pair of horizontallypositioned guiding and supporting bars l5 which are in turn carried bystructural members It spaced well apart from the central location of thedie l3, and which structural members l8 may obviously be attached to andform a part of the rolling mill stand structure heretofore referred toand indicated by the numeral ii.

In order that the die I! may be locked in position in alignment with theparticular cavities being utilized in rolling shafting or bar, manuallyoperated bolts I! are threadably positionedthrough each of the brackets14 and A and are adapted to engage the horizontal guiding and supportingbars I5 so as to effectively lock the die against unwanted sidewardmovement during actual operating periods.

Still referring to Figure 1, it will be observed that bar or shaftemerging from the die I! is indicated by the numeral II and is shownbeing delivered to a conveyor table I, the conveyor rolls of which areindicated by the numerals II. It is believed that the various conveyorrolls 2| of the conveyor table It should be powered in order to impartmovement to the bar or shaft I! and thus tend to keep it in motion afterthe rearmost end hasleft the rolls ill and H. The distance between theshaping surfaces of the die I! and the engaging positions of the rolls land ii is not great but provision has been made to provide forimpartingmovement to the bar or shaft i8 during this phase of its travel toinsure the rear-most end successfully passing through the shaping dieii. In the event the motion imparted by the conveyor rolls 20 is notsuflicient for the purpose, it will be observed way 23 whichcommunicates with the exterior of the die I3, will be forced to travelthrough the chambers 2| around the shaping surfaces of the die and willthen be discharged through a secondary'passageway 24 communicating withthe chambers 2i and the exterior of the die. Hose connections areestablished between the outer-most ends of passageways 28 and 24, one ofwhich is placed in communication with a fluid supply source, the otherof which forms a drain.

It will be seen that the die l3 may be i'ormed in any practical shape ofany practical material and that if desired, the actual shaping surfaceof the die may be made in the form of inserts positioned in a bodymember adapted to hold the same and provide for the cooling thereof. Itwill also be seen that the die is provided with a trumpet shaped openingwhich insures the direction of the bar or shaft being shaped to theshaping surfaces of the die.

It will be seen that the die as illustrated and described herein whenused in connection with bar and shafting rolling mills, makes itpossible to produce perfect shaped products whether they be round,square or any other shape des red. The die therefore, eliminates thewaste now common in the art of making shai'ting and bars in that thereare no out-of-round or other undesirable irregularities produced whichmust be cut from the finished product-as waste. It will also be seenthat the condition of the rod or shaft being used will not affectthequality of th product produced as scale or other surface imperfectionsare readily removed by the die.

By again referring to Figure 1 of th drawing, it will be seen that apair of secondary guide members 26 and 21 have been. positioned betweenthe die l3 and the point between the rolls Ill and Hwhere the shaft orbar emerges therefrom. These guides are preferably carried by thestructuralmembers lt-heretofore described. and serve to prevent bucklingof the bar or shaft being directed through the die !3. It will beobserved-that these guide members may be supported or otherwise held indesirable position by any means known in the art so that they willremain in operative position at such times that there are no'bars orshaft therebetwecn. The guides extend into the cavities of the rolls andare shaped to fit therein so that they guide the shaft or bar over thecomplete distance between the rolis and the die.

Having thus described my invention, what I claim is:

The combination of a bar rolling mill and a die positioned immediatelyafter the last stands of the said rolling mill, the said di comprising abody member of suitable material having an opening formed therethibflilhand a directional trumpet formed therein, cooling chamberspositioned-about the shaping surfaces oi'the said die and means forcirculating a cooling agent therethrough, the said die adapted to bepositioned in alignment with-the delivery section of a bar or shaftrolling mill so that bar or shalt emerging from the rolling mill isdirected through the said die and suitably shaped thereby.

"ALEXANDER

